[COMMITTED] ada: Recognize iterated_component_association as potentially unevaluated

["Marc Poulhiès" <poulhies@adacore.com>]

From: Piotr Trojanek <trojanek@adacore.com>

Routine Is_Potentially_Unevaluated was written for Ada 2012, but now we
use it for Ada 2022 as well, so it must recognize iterated component
associations (which were added by Ada 2022) as an array component
association.

gcc/ada/

	* sem_util.adb (Is_Potentially_Unevaluated): Recognize iterated
	component association as potentially unevaluated.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_util.adb | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb
index b82978ba99e..23668f1bec5 100644
--- a/gcc/ada/sem_util.adb
+++ b/gcc/ada/sem_util.adb
@@ -19566,7 +19566,8 @@ package body Sem_Util is
          elsif Nkind (Par) = N_Quantified_Expression then
             return Expr = Condition (Par);
 
-         elsif Nkind (Par) = N_Component_Association
+         elsif Nkind (Par) in N_Component_Association
+                            | N_Iterated_Component_Association
            and then Expr = Expression (Par)
            and then Nkind (Parent (Par))
               in N_Aggregate | N_Delta_Aggregate | N_Extension_Aggregate
@@ -19708,10 +19709,15 @@ package body Sem_Util is
          then
             return True;
 
-         --  For component associations continue climbing; it may be part of
-         --  an array aggregate.
+         --  For component associations continue climbing; it may be part of an
+         --  array aggregate. For iterated component association we know that
+         --  it belongs to an array aggreate, but only its expression is
+         --  potentially unevaluated, not discrete choice list or iterator
+         --  specification.
 
-         elsif Nkind (Par) = N_Component_Association then
+         elsif Nkind (Par) in N_Component_Association
+                            | N_Iterated_Component_Association
+         then
             null;
 
          --  If the context is not an expression, or if is the result of
-- 
2.40.0